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Related to Purus River: Amazon River, Tocantins River, Tapajos River


(po͞oro͞oz`), river, c.2,100 mi (3,380 km) long, rising in the Andes Mts., E Peru. It flows generally northeast in a meandering course, across Acre and Amazonas states, NW Brazil, to the Amazon River. Mostly navigable, it traverses a rubber-producing region and receives the Acre River at Bôca do Acre.



a river in South America, mainly in Brazil, a right tributary of the Amazon. It is 3,200 km long and drains an area of 365,000 sq km. Originating in Peru, near the eastern foothills of the Andes, it meanders through the Amazon Basin within clayey and lightly eroded banks in humid equatorial forests. The mean annual flow rate is 12,600 cu m per sec. High water is in March and April. The Purús is navigable for almost its entire length.

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The study was conducted in an area around the BR319 highway (which connects Manaus to Porto Velho) in the interfluve of the Madeira and Purus Rivers of the Brazilian Amazon (Figure 1).
As a consequence of the high beta diversity among the lakes, their individual contribution is important for maintaining the gamma diversity of macrophytes within the Purus river floodplain.
The most recent species was found at the confluence of Brazil's Solimoes and Purus rivers.